I bought a Mainboard, I changed it. It seems to work.
No Freezing, No Restarting.

I tried to make Pictures from the Settings with the old Mainboard. But because of freezing and starting again, this was not as easy as i thought.
So I want first to try the new Board.

Maybe anyone has the Settings to an UE46ES8090 Germany, i have to do?? Otherwise I could build in the old Mainboard and try to make pictures of the old setting. But I think this would be take more than one Day.

Well maybe check "UE40ES8000, T-ECPDEUC-2003.4" from there, IIRC it's precisely an es7090 tweaked to es8090, you still can compare (btw, the '..90' is specific to German models and doesn't change anything about features...)